I've also gathered basic stats to compare the G1 against the Apple iPhone:

Feature

iPhone

G1

Price

200

180

Height

4.5"

4.6"

Width

2.4"

2.16"

Depth

0.48"

0.62"

Weight

133 g

158 g

Display

3.5" 480x320

3.2" 480x320

Camera

2 Mpix

3.2 Mpix

Keyboard

SW

HW

Trackball

no

yes

CPU

620 MHz ARM 1176

528 MHz ARM 11

RAM

128 DRAM

192 DDR SDRAM + 256 MB Flash

Storage

8 or 16 GB built in

1-8 GB microSD

Data Port

30 pin dock connector

USB

Audio Port

3.5 mm

USB or USB with 3.5 mm dongle

Recharge

Dock to USB

USB

Battery Talk

5 h

5 h

Battery Standby

300 h

130 h

Battery Replacement

dealer only

you or dealer

The G1 is appealing because I make heavy use of Google for email and calendar. Since my name is George, having a phone called "G1" has some ego appeal. It is also a pleasing coincidence that the G1 was released on my birthday in 2008.